As I was sitting in my backyard, during a very clear night, I noticed in the corner of my eye a streaking flash,like a shooting star. As I looked up to see it over my head, it exploded in a blue flash. The flash looked like a fiery ball that then seperated into two blue-ish fireballs that appeared to chase each other in a tight circle in the very spot the "explosion" happened.The fireballs had long tails that form a circle when the chased each other. The fireballs continued to circle one another faster adn faster and closer and closer until they came together and exploded again in a larger blue-ish explosion. The fireballs then seperated, each going opposite directions, one appearing to burn out and the other compressing into a tiny star-like ball. The star-like object continued its path across the sky, looking much like a satellite, until it could no longer be seen. There were three other people with me, but they only saw what appeared to be the satellite crossing the sky. The entire episode concerning the firball-like objects lasted a mere 6-7 seconds.